gtk2_ardour/control_point.cc

   1 /*
   2     Copyright (C) 2002-2007 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #include "control_point.h"
  21 #include "diamond.h"
  22 #include "automation_line.h"
  23 #include "ardour_ui.h"
  24 #include "public_editor.h"
  25
  26 #include "i18n.h"
  27
  28 using namespace std;
  29 using namespace ARDOUR;
  30 using namespace PBD;
  31 using namespace Gnome; // for Canvas
  32
  33 ControlPoint::ControlPoint (AutomationLine& al)
  34         : _line (al)
  35 {
  36         _model = al.the_list()->end();
  37         _view_index = 0;
  38         _can_slide = true;
  39         _x = 0;
  40         _y = 0;
  41         _shape = Full;
  42         _size = 4.0;
  43         _selected = false;
  44
  45         _item = new Canvas::SimpleRect (_line.canvas_group());
  46         _item->property_draw() = true;
  47         _item->property_fill() = false;
  48         _item->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_ControlPointFill.get();
  49         _item->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_ControlPointOutline.get();
  50         _item->property_outline_pixels() = 1;
  51         _item->set_data ("control_point", this);
  52         _item->signal_event().connect (sigc::mem_fun (this, &ControlPoint::event_handler));
  53
  54         hide ();
  55         set_visible (false);
  56 }
  57
  58 ControlPoint::ControlPoint (const ControlPoint& other, bool /*dummy_arg_to_force_special_copy_constructor*/)
  59         : _line (other._line)
  60 {
  61         if (&other == this) {
  62                 return;
  63         }
  64
  65         _model = other._model;
  66         _view_index = other._view_index;
  67         _can_slide = other._can_slide;
  68         _x = other._x;
  69         _y = other._y;
  70         _shape = other._shape;
  71         _size = other._size;
  72         _selected = false;
  73
  74         _item = new Canvas::SimpleRect (_line.canvas_group());
  75         _item->property_fill() = false;
  76         _item->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_ControlPointOutline.get();
  77         _item->property_outline_pixels() = 1;
  78
  79         /* NOTE: no event handling in copied ControlPoints */
  80
  81         hide ();
  82         set_visible (false);
  83 }
  84
  85 ControlPoint::~ControlPoint ()
  86 {
  87         delete _item;
  88 }
  89
  90 bool
  91 ControlPoint::event_handler (GdkEvent* event)
  92 {
  93         return PublicEditor::instance().canvas_control_point_event (event, _item, this);
  94 }
  95
  96 void
  97 ControlPoint::hide ()
  98 {
  99         _item->hide();
 100 }
 101
 102 void
 103 ControlPoint::show()
 104 {
 105         _item->show();
 106 }
 107
 108 void
 109 ControlPoint::set_visible (bool yn)
 110 {
 111         _item->property_draw() = (gboolean) yn;
 112 }
 113
 114 bool
 115 ControlPoint::visible () const
 116 {
 117         return _item->property_draw ();
 118 }
 119
 120 void
 121 ControlPoint::reset (double x, double y, AutomationList::iterator mi, uint32_t vi, ShapeType shape)
 122 {
 123         _model = mi;
 124         _view_index = vi;
 125         move_to (x, y, shape);
 126 }
 127
 128 void
 129 ControlPoint::set_color ()
 130 {
 131         uint32_t color = 0;
 132
 133         if (_selected) {
 134                 color = ARDOUR_UI::config()->canvasvar_ControlPointSelected.get();
 135         } else {
 136                 color = ARDOUR_UI::config()->canvasvar_ControlPointOutline.get();
 137         }
 138
 139         _item->property_outline_color_rgba() = color;
 140         _item->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_ControlPointFill.get();
 141 }
 142
 143 void
 144 ControlPoint::set_size (double sz)
 145 {
 146         _size = sz;
 147         move_to (_x, _y, _shape);
 148 }
 149
 150 void
 151 ControlPoint::move_to (double x, double y, ShapeType shape)
 152 {
 153         double x1 = 0;
 154         double x2 = 0;
 155         double half_size = rint(_size/2.0);
 156
 157         switch (shape) {
 158         case Full:
 159                 x1 = x - half_size;
 160                 x2 = x + half_size;
 161                 break;
 162         case Start:
 163                 x1 = x;
 164                 x2 = x + half_size;
 165                 break;
 166         case End:
 167                 x1 = x - half_size;
 168                 x2 = x;
 169                 break;
 170         }
 171
 172         _item->property_x1() = x1;
 173         _item->property_x2() = x2;
 174         _item->property_y1() = y - half_size;
 175         _item->property_y2() = y + half_size;
 176
 177         _x = x;
 178         _y = y;
 179         _shape = shape;
 180 }
 181
 182 void
 183 ControlPoint::i2w (double& x, double& y) const
 184 {
 185         _item->i2w (x, y);
 186 }